How to write 开头开头

to open (transitive or intransitive); (of ships, vehicles, troops etc) to start; to turn on; to put in operation; to operate; to run; to boil; to write out (a prescription, check, invoice etc); (directional complement) away; off; carat (gold); abbr. for Kelvin, 开尔文; abbr. for 开本, book format

head; hair style; the top; end; beginning or end; a stub; remnant; chief; boss; side; aspect; first; leading; classifier for pigs or livestock